Improvement in sewing-machines



. 2SheetsSheet 1. J. B. PRICE & C. E. BILLINGS.

SEWING-MACHINE.

Patented Feb. 15,1876.

v N. PETERS. FHOTO-LITHOGRAPIOER, WASNINGT'ON. D. C-

UN T D STATE$ JOHN B. rarer: AND CHARLES E: BILLINGs-OF HARTFORD,OONHEOTIOUT.

PATENT F IC IMPROVEMENT IN SEWING-MACHINES.

Specification forming part of Letters Patent No. 173,665,.dated February15, 1876; application filed I 1 June 29, 1875. I

To all whom it may cancer-n:

Be it known that we, JOHN B. PRICE and CHARLEs E. BILLING-S, both ofHartford, State of Connecticut, have invented certain and usefulImprovements in Sewihg-lllachines,

. of which the following is a specification;

provements. Fig. 2 is a bottom view; Fig. 3,

a detail view; Fig. 4, an end view; and Fig. 5, a detail View. f

Passingfrom the end of the lever D through the bed F, and hinged toabearing therefrom, is the vibrating leverE, which is formed above itsbearing into the fingers f f, against which alternately bears the diskG, to impart the vibrating movement to the lower end of the lever.:

The disk G forms the head of the plunger H, which is Operatedby cam I onthe drivingshaft W, so that every stroke of the plunger will, throughthe vibrations of lever F, impart the motion to the lever D necessary toform the feed. i

The lever F is hinged at a, as shown in Fig. 1, to a hub, H, keyed orotherwise secured in the bed E so as to rotate freely therein on an axiscoincident with the center of the diskstem, and as the fingers ff are onopposite sides of the disk G, their position relative to the disk willnot be affected by the rotation of the hub H, and from the position ofthe fingers f f, the motion of the end of the lever F with the end oflever D, to which it is connected, will always be in the vertical planeoccupied by the fingers.

In Fig. 1, the disk G is shown commencing to descend upon finger f torock it, to impart the half of a reciprocating movement to the lever D,as Well as to move the finger f in a position to be struck by the diskas it rises to complete the reciprocation of lever D, and as the plungerand disk G and rocker-cam 0 upon shaft A derive their motion from shaftW, and always move in the same relative time, by turning the hub H untilthe position of the fingers is reversed, and the one f" where 1 the onefis shown to be in the drawing,1the

direction of the feed will be reversed, for the a reason that the leverD will be raised by the cam 0 at: a different halfof its reciprocationto engage with the fabric or work, and this reversal of direction of thefeed will be produced by the semirotation of the hub H in any plane thefingers ff may occupy.

When the lever F thus moves in the plane in which it is shown inthedrawing, the lever D is only reciprocated; but in order that it mayalso at the same time vibrate to enable the lever F to swing in anyvertical plane, and have the angle of its departure from the one inwhich the lever D is simply reciprocated transferred to the feed end oflever D, a guide, L, is arranged at or near the center of said lever,to, while permitting the lever to slide freely therein, become itself afulcrum that turns freely with every vibration of the lever D; this isshown in Fig. l, where the combined guide and fulcrum is shown securedto the under side of the bed.

In Fig. .1, the ends of levers F and D are shown connected by aball-and-socket joint.

In Fig. 2, portions of lever D and shaft A are removed, to show the baseof hub H, provided with gearing to enable it to be rotated easily bymeans of the wheelK, the axis of which is prolonged above the bed, to'beprovided with a handle, M, by means of which the rotation of the hub His effected, and by means of the scale N beneath the handle the degreeof said rotation is laid off, as shown in the drawing, the hub H isspeeded up to enable the change of direction of feed to be at onceaccomplished; audit will be seen that, by the mechanism hereinbeforedescribed, the work upon the bed may be compelled to move under theneedle in any direction and subject to any change, at the will of theoperator.

In order. that the end of lever D resting upon the rocker C may playfreely above the rocker, and be lifted at once by it at any point of itsmovement, and to provide an anti-friction surface for the end of thelever to bear upon, we bring from the under surface of the bed E aflexible metallic strip, P, to have its free end inserted between therocker and the superineumbent lever, and in the form of a plate thatfollows the rocker. and transmits its movement at once to the lever.

Fig. 4 shows the presser-bar R, arr-(1n ged in the head at an angle lessthan a right angle to the bed E, and having the presser-foot prolongedtherefrom so formed as to rise over any folds, lumps, or inequalities inthe cloth dragged beneath it, by 'diverting the force of tion coincidentwith its length, to thus, by sliding the bar R in its bearings, relieveit and them of the damaging strain that would otherwise result. A

In Fig. 4, the needle is' shown prolonged from the bar S eccentricallyto its axis, and

in the clamp s, that. connects the bar to: the

crank-arm, is the slot; y,. in which: plays; the

' pin h from the bar S, when the bar is rotated, by which construction:the bar is raised: and

lowered by the clamp, while free to betuined from being dropped.

Now, having described our invention, what i we claim is such blow to thepresser-bar itself in a direc- The plunging disk G, lever F, providedwith the fingersff, the hub H, adapted to rotation upon an axiscoincident withthat of the plunger, and? the v-ibro-reciprocati-ng leverD,

- combined and operating substantially in the manner and for the purposeset forth.

JOHN B. PRICE. CHARLES E. BILLINGS.

Witnesses:

HEN-RY H. Enron, L. PERRY.

